/* GTK - The GIMP Toolkit * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ /* * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS * file for a list of people on the GTK+ Team. See the ChangeLog * files for a list of changes. These files are distributed with * GTK+ at ftp://ftp.gtk.org/pub/gtk/. */ #include <config.h> #include "gtkdrawingarea.h" static void gtk_drawing_area_class_init (GtkDrawingAreaClass *klass); static void gtk_drawing_area_init (GtkDrawingArea *darea); static void gtk_drawing_area_realize (GtkWidget *widget); static void gtk_drawing_area_size_allocate (GtkWidget *widget, GtkAllocation *allocation); static void gtk_drawing_area_send_configure (GtkDrawingArea *darea); GType gtk_drawing_area_get_type (void) { static GType drawing_area_type = 0; if (!drawing_area_type) { static const GTypeInfo drawing_area_info = { sizeof (GtkDrawingAreaClass), NULL, /* base_init */ NULL, /* base_finalize */ (GClassInitFunc) gtk_drawing_area_class_init, NULL, /* class_finalize */ NULL, /* class_data */ sizeof (GtkDrawingArea), 0, /* n_preallocs */ (GInstanceInitFunc) gtk_drawing_area_init, }; drawing_area_type = g_type_register_static (GTK_TYPE_WIDGET, "GtkDrawingArea", &drawing_area_info, 0); } return drawing_area_type; } static void gtk_drawing_area_class_init (GtkDrawingAreaClass *class) { GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class); widget_class->realize = gtk_drawing_area_realize; widget_class->size_allocate = gtk_drawing_area_size_allocate; } static void gtk_drawing_area_init (GtkDrawingArea *darea) { darea->draw_data = NULL; } GtkWidget* gtk_drawing_area_new (void) { return g_object_new (GTK_TYPE_DRAWING_AREA, NULL); } void gtk_drawing_area_size (GtkDrawingArea *darea, gint width, gint height) { g_return_if_fail (GTK_IS_DRAWING_AREA (darea)); GTK_WIDGET (darea)->requisition.width = width; GTK_WIDGET (darea)->requisition.height = height; gtk_widget_queue_resize (GTK_WIDGET (darea)); } static void gtk_drawing_area_realize (GtkWidget *widget) { GtkDrawingArea *darea; GdkWindowAttr attributes; gint attributes_mask; g_return_if_fail (GTK_IS_DRAWING_AREA (widget)); darea = GTK_DRAWING_AREA (widget); GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED); attributes.window_type = GDK_WINDOW_CHILD; attributes.x = widget->allocation.x; attributes.y = widget->allocation.y; attributes.width = widget->allocation.width; attributes.height = widget->allocation.height; attributes.wclass = GDK_INPUT_OUTPUT; attributes.visual = gtk_widget_get_visual (widget); attributes.colormap = gtk_widget_get_colormap (widget); attributes.event_mask = gtk_widget_get_events (widget) | GDK_EXPOSURE_MASK; attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP; widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask); gdk_window_set_user_data (widget->window, darea); widget->style = gtk_style_attach (widget->style, widget->window); gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL); gtk_drawing_area_send_configure (GTK_DRAWING_AREA (widget)); } static void gtk_drawing_area_size_allocate (GtkWidget *widget, GtkAllocation *allocation) { g_return_if_fail (GTK_IS_DRAWING_AREA (widget)); g_return_if_fail (allocation != NULL); widget->allocation = *allocation; if (GTK_WIDGET_REALIZED (widget)) { gdk_window_move_resize (widget->window, allocation->x, allocation->y, allocation->width, allocation->height); gtk_drawing_area_send_configure (GTK_DRAWING_AREA (widget)); } } static void gtk_drawing_area_send_configure (GtkDrawingArea *darea) { GtkWidget *widget; GdkEvent *event = gdk_event_new (GDK_CONFIGURE); widget = GTK_WIDGET (darea); event->configure.window = g_object_ref (widget->window); event->configure.send_event = TRUE; event->configure.x = widget->allocation.x; event->configure.y = widget->allocation.y; event->configure.width = widget->allocation.width; event->configure.height = widget->allocation.height; gtk_widget_event (widget, event); gdk_event_free (event); }